On 12/10/2014 01:06 PM, Blaster wrote:
On 11/27/2014 9:12 AM, Keppler, Thomas (PEBA) wrote:
Now, before I go into any more hassle, has somebody else of you done a live-backup solution for oVirt? Are there any recommendations? Thanks for any help provided!
I've been looking for a similar scheme for the last year. It was not (really) possible in the past as there wasn't any way to destroy a snapshot w/o shutting down the VM. Is this still the case, or are snap shots fully implemented now?
Basically, I'd like to: Tell VM to flush it's buffers suspend VM take snap shot of boot virtual disk resume VM backup the virtual boot disk from the Hypervisor using standard commands (tar, cp, whatever) destroy the snapshot
This would at least give some BMR capabilities of your VMs.
Ideally, I'd also like to be able to create a snapshot from within the VM, do a yum update, see if I like it or not, if I do, then destroy the snap shot. If I don't, I want to promote the snapshot and boot from that, then destroy the "original". (Yes, I know, BTRFS is supposed to be the solution to this with in the VM at some point, isn't it?)
I have looked at the oVirt backup API wiki, but the code examples look more like pseudo code than real world examples.
that's "live merge". its in 3.5, but pending rhel/centos 7.1 (and accompanying 3.5.z patches around for bugs found during testing with that upcoming release)